/* 字体和全局布局 */
body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: #fff;
    margin: 0;
    padding: 0;
    color: #333;
  }
  
  .container {
    max-width: 500px;
    margin: 60px auto;
    padding: 30px;
    border: 1px solid #eee;
    border-radius: 12px;
    background-color: #fafafa;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  }
  
  h1 {
    text-align: center;
    color: #d7000f; /* 肯德基红 */
    margin-bottom: 24px;
  }
  
  .coupon-form {
    display: flex;
    flex-direction: column;
  }
  
  .coupon-form label {
    margin-bottom: 6px;
    font-weight: bold;
    color: #555;
  }
  
  .coupon-form input,
  .coupon-form select {
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
  }
  
  .coupon-form input:focus,
  .coupon-form select:focus {
    border-color: #d7000f;
    outline: none;
  }
  
  button[type="submit"] {
    padding: 12px;
    background-color: #d7000f;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  button[type="submit"]:hover {
    background-color: #b0000c;
  }
  